The LM25576 is an easy to use SIMPLE SWITCHER® buckregulator which allows design engineers to design and optimizea robust power supply using a minimum set of components.Operating with an input voltage range of 6 - 42V, theLM25576 delivers 3A of continuous output current with an integrated170mΩ N-Channel MOSFET. The regulator utilizesan Emulated Current Mode architecture which provides inherentline regulation, tight load transient response, and easeof loop compensation without the usual limitation of low-dutycycles associated with current mode regulators. The operatingfrequency is adjustable from 50kHz to 1MHz to allowoptimization of size and efficiency. To reduce EMI, a frequencysynchronization pin allows multiple IC’s from theLM(2)557x family to self-synchronize or to synchronize to anexternal clock. The LM25576 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermalshut-down, and remote shut-down. The device is available ina power enhanced TSSOP-20 package featuring an exposeddie attach pad for thermal dissipation. The LM25576 is supportedby the full suite of WEBENCH® On-Line design tools.
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